<template>
    <div>
        <el-upload
                ref="upload"
                class="avatar-uploader"
                :headers="{'Content-Type': 'application/json'}"
                :data="photoData"
                action="string"
                :show-file-list="false"
                :on-success="handleAvatarSuccess"
                :before-upload="beforeAvatarUpload">
            <img v-if="imageUrl" :src="imageUrl" class="avatar">
            <i v-else class="el-icon-plus avatar-uploader-icon"></i>
        </el-upload>
        <el-button @click="resetPhoto">重置</el-button>
    </div>
</template>

<script>
    import {upload} from "../../request/api";

    export default {
        name: "upload",
        data() {
            return {
                imageUrl: '',
                photoData:{}
            };
        },
        methods: {
            resetPhoto(){
                this.$refs.upload.clearFiles()
            },
            handleAvatarSuccess(res, file) {
                this.imageUrl = URL.createObjectURL(file.raw);
                this.photoData = {photo:this.imageUrl}

                console.log(this.imageUrl);
            },
            beforeAvatarUpload(file) {
                var This = this;
                var reader = new FileReader();
                reader.readAsDataURL(file);
                reader.onload = function(e){
                    this.result; //base64编码
                    This.imageUrl = this.result;
                    upload({photo:This.imageUrl}).then(res =>{
                        console.log(res);
                    }).catch(err =>{
                        console.log(err)
                    })
                }
                //
                // const isJPG = file.type === 'image/jpeg';
                // const isLt2M = file.size / 1024 / 1024 < 2;
                //
                // if (!isJPG) {
                //     this.$message.error('上传头像图片只能是 JPG 格式!');
                // }
                // if (!isLt2M) {
                //     this.$message.error('上传头像图片大小不能超过 2MB!');
                // }
                // return isJPG && isLt2M;
            }
        }
    }
</script>

<style>
    .avatar-uploader .el-upload {
        border: 1px dashed #d9d9d9;
        border-radius: 6px;
        cursor: pointer;
        position: relative;
        overflow: hidden;
    }
    .avatar-uploader .el-upload:hover {
        border-color: #409EFF;
    }
    .avatar-uploader-icon {
        font-size: 28px;
        color: #8c939d;
        width: 178px;
        height: 178px;
        line-height: 178px;
        text-align: center;
    }
    .avatar {
        width: 178px;
        height: 178px;
        display: block;
    }
</style>

<style scoped>

</style>
